With the ZMSL room module with signal light and the Series 5 call switch range, EFE offers the option of installing a simple call system in accordance with DIN VDE 0834 for equipping publicly accessible disabled toilets in public buildings, doctors' surgeries, department stores, rehabilitation centers and various care facilities.

The push-buttons, designed as a central plate with 55 x 55 mm², can be installed in various commercially available installation programs (e.g. Merten System Joy or similar, not supplied).